我正在开发一个应用程序，我想设置一个从服务器下载并设置为GalleryView的图像继承人的图像代码
ga.setAdapter(new ImageAdapter(this, Card_Image));
这里我将图像从Bitmap转换为drawable
imageBitmap[i]=BitmapFactory.decodeByteArray(decodedString, 0, decodedString.length);
Card_Image[i]=new BitmapDrawable(imageBitmap[i]);
和ImageAdapter是
public class ImageAdapter extends BaseAdapter {
private Context ctx;
int imageBackground;
Drawable[] image_data;
String[] merchantname,cardname,expireddate,points_;
TextView MerchantName,CardName,ExpiryDate,Points;
public ImageAdapter(Context c, Drawable []card_image) {
ctx = c;
image_data = card_image;
merchantname = merchant_name;
cardname = card_name;
expireddate = expired_date;
points_=points;
TypedArray ta = obtainStyledAttributes(R.styleable.Gallery1);
imageBackground = ta.getResourceId(R.styleable.Gallery1_android_galleryItemBackground, 1);
ta.recycle();
}
public int getCount() {
return image_data.length;
}
public Object getItem(int arg0) {
return arg0;
}
public long getItemId(int arg0) {
return arg0;
}
public View getView(int position, View arg1, ViewGroup arg2) {
ImageView i ;//= new ImageView(this.ctx);
if (arg1 == null) {
i = new ImageView(this.ctx);
} else {
i = (ImageView) arg1;
}
// ImageView iv = new ImageView(ctx);
// Drawable drawable = new BitmapDrawable(getResources(), image_data[position]);
// MerchantName=(TextView)findViewById(R.id.header1);
// CardName=(TextView)findViewById(R.id.header2);
// ExpiryDate=(TextView)findViewById(R.id.footer1);
// Points=(TextView)findViewById(R.id.footer2);
// MerchantName.setText(merchantname[position]);
// CardName.setText(cardname[position]);
// ExpiryDate.setText(expireddate[position]);
// Points.setText(points_[position]);
i.setImageDrawable(image_data[position]);
// i.setImageDrawable(new BitmapDrawable(getResources(), image_data[position]));
i.setScaleType(ImageView.ScaleType.FIT_XY);
i.setLayoutParams(new Gallery.LayoutParams(300,200));
i.setBackgroundResource(imageBackground);
return i;
}
}
XML
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginBottom="60dp"
android:background="@drawable/bckcolor"
android:orientation="vertical" >
<TextView
android:id="@+id/Heder_HomeCard"
android:layout_width="fill_parent"
android:layout_height="50dp"
android:background="@drawable/header"
android:gravity="center"
android:text="Cards"
android:textColor="#FFFFFF"
android:textSize="18sp"
android:textStyle="bold" />
<AutoCompleteTextView
android:id="@+id/card_search"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="5dp"
android:layout_marginLeft="5dp"
android:layout_marginRight="5dp"
android:layout_marginTop="5dp"
android:background="@drawable/my_border"
android:hint="Search"
android:singleLine="true" />
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<TextView
android:id="@+id/header1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="center"
android:text="ABC"
android:textColor="#000"
android:textStyle="bold" />
<TextView
android:id="@+id/header2"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="center"
android:text="bcd"
android:textColor="#000"
android:textStyle="bold" />
</LinearLayout>
<LinearLayout
android:id="@+id/addscrollviw"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="3.4"
android:background="#FFFFFF"
android:gravity="center_horizontal"
android:orientation="vertical" >
<LinearLayout
android:id="@+id/tableLayout1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="6"
android:gravity="center_horizontal"
android:orientation="vertical"
android:weightSum="1" >
<Gallery
android:id="@+id/Gallery01"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="1" >
</Gallery>
</LinearLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal" >
<TextView
android:id="@+id/footer1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="25dp"
android:gravity="left"
android:text="xyz"
android:textColor="#000"
android:textStyle="bold" />
<TextView
android:id="@+id/footer2"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="45dp"
android:gravity="right"
android:text="jkl"
android:textColor="#000"
android:textStyle="bold" />
</LinearLayout>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="50dp"
android:background="@drawable/header"
android:gravity="center_horizontal"
android:weightSum="1" >
<ImageView
android:id="@+id/star_card"
android:layout_width="100dp"
android:layout_height="fill_parent"
android:layout_marginRight="50dp"
android:layout_marginTop="5dp" />
<!-- <Button android:id="@+id/button1" android:layout_height="34dp" -->
<!-- android:textColor="#FFFFFF" android:layout_width="wrap_content" -->
<!-- android:layout_weight="0.21" android:layout_marginRight="30dp" -->
<!-- android:layout_marginTop="8dp" -->
<!-- android:background="#348781" android:text="All Cards"></Button> -->
<ImageView
android:id="@+id/btn_addcard"
android:layout_width="100dp"
android:layout_height="fill_parent"
android:layout_marginTop="5dp" />
<!-- <Button android:text="Add Cards" android:id="@+id/btn_addcard" -->
<!-- android:background="#348781" android:layout_width="wrap_content" -->
<!-- android:layout_marginTop="8dp" android:layout_height="34dp" -->
<!-- android:layout_weight="0.12" android:textColor="#FFFFFF"></Button> -->
</LinearLayout>
</LinearLayout>
显示的是GalleryView，但只有黑色方块我无法在galleryView中看到图像 帮助
感谢你 阿布舍克巴克